RFC 6947: The Session Description Protocol (SDP) Alternate Connectivity (ALTC) Attribute
In plain English — editorial summary, not part of the RFC
This document proposes a mechanism that allows the same SDP offer to carry multiple IP addresses of different address families (e.g., IPv4 and IPv6). The proposed attribute, the "altc" attribute, solves the backward-compatibility problem that plagued Alternative Network Address Types (ANAT) due to their syntax. The proposed solution is applicable to scenarios where connectivity checks are not required. If connectivity checks are required, Interactive Connectivity Establishment (ICE), as specified in RFC 5245, provides such a solution.
Document record
- Document ID
- RFC6947
- Published
- May 2013
- Authors
- M. Boucadair; H. Kaplan; R. Gilman; S. Veikkolainen
- Status
- INFORMATIONAL
- Stream
- INDEPENDENT
- Area
- —
- Pages
- 24
- Also known as
- —
Also filed under
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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